Mechanism for operating cutting apparatus of mowing-machines.



Patented June l2, I900.

J. A. DAUGAABD. MECHANISM FOR OPERATING CUTTING APPARATUS 0F MOWING MACHINES.

(Application filed Nov. 1, 1899.)

2 Sheets-+Sheet I.

(No Model.)

No. 65l,700. I Patented lune l2, I900. I I .I. A. DAUGAAIBiBi MECHANISM FOR OPERATING CUTTING ABRA-IBIAIT'IIS: 0F MCWINC MACHINES.

pp t m mam. II, .8.99.0; (No Model.) 2 Sheets-Sheet 2.

1521 6221 021 iaizauer azI'am/filhzymmi Jib 027039.9

THE Nrmms PEYERS co PHom-uTI- o., wnsumsron. 04 c YNI-TEDV STATES PATENT OFFICE.

JOHANAUGUST DAUGAARD, OF COPENHAGEN, DENMARK.

MECHANISM FOR OPERATING CUTTING APPARATUS 0F MOWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 651,700, dated June 12, 1900.

Application filed November 1, 1899. Serial No. 735,515. (No model.)

anism is characterized thereby that, contrary to the custom followed up to now, no cogwheels are used for transmitting the moving power from the axle of the machine to the connecting-rod actuating the knives of the cutting apparatus.

The invention is shown on the accompany-' ing drawings, in which* Figures 1 and-2 represent a mowing-ma chine having the said moving mechanism, seen, respectively, from above and in side elevation. Figs. 3 and 4 represent details.

a is the wheel-axle, on which the drivingwheels I) are placed in the usual manner. on the axle a is further arranged a wheel 0, which by means of a coupling arrangement and during the working of the machine maybe made either to follow the movement of the axle or remain loosely on same. As shown in Figs. 2 and 4, the tire or rim of the wheel 0 is formed as an undulating or wavyline. Closely outside the rim of the wheel is arranged a bolt ol, which is carried partly by an arm 6, fastened onto the frame of the machine, and partly by a second arm f, passed around the axle outside the-wheel c. On the bolt d is arranged an oscillating three-armed crank-lever, two arms 9 of which are provided with rollers h, that just touch the wavy rim of the wheel 0. The distance between these two rollers is so regulated that the one is in contact with the top of a wave or undulation when the other is in contact with a hollow between two waves, and itwill therefore be obvious that the threearmed crank-lever obtains a to-and fro swinging movement around the bolt alas the wheel 0 turns.

The swinging movement of the crank-lever is transmitted to the cutting apparatus i of the machine by means of a crank-lever Z a,

arranged to move round a bolt is upon the machine-frame and which with the one arm a is connected to the third arm of the above- .described three-armed crank-lever and with in a lug 12, forming the prolongation of the arm m. As the arm m turns round the bolt d and the arm a round the bolt 70, the arm on must be so arranged that it may alternately be lengthened and shortened, as otherwise a breakage of the machine would occur. For this purpose the lug o is provided with a pin to, that may slide freely into a corresponding hole in the arm or. The lug o may thus alternately move away from and draw near to the bolt (1, around which the arm m is swinging, the length of the arm m accommodating itself to the movement of the lever u.

By regulating the length of the arms of the crank-lever in a suitable manner the necessary movement of the knife may be obtained, even with very flat waves upon the rim of the wheel 0.

The cutting apparatus is arranged in the usual manner and may be raised from the ground when not used. The cutting apparatus is for this purpose attached to a frame q, that may move round the bolts 0 and p,

and which may be raised and lowered by means of a'lever s.

As the angular movement of the threearmed lever is reduced when the summit of the waves of the wheel 0 is worn, the downward arm Z of the crank-lever must be so arranged that it may easily be lengthened a I t always remains the same.

Having now particularly described and ascertained the nature of this said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a harvester, a rotating wheel 0 with a wavy or undulating rim, in combination with a movable three-armed crank-lever arranged adjacent to the rim of the said wheel, and

whose two arms g are provided with rollers h that roll upon the rim of the wheel 0, the distance between these rollers being such that the one roller touches :the summit of a wave simultaneously with the other one touching thebottom of the curve between two waves, a crank-lever Z u having one arm connected with the third arm of the three-armedcranli lever, said crank-lever being mounted on a horizontal'zpivot in advanceof theLwheel andi a connecting-rod 72 connected with the other armof said crank-lever, the otherendof said I connecting-rod being movably attach ed to the knife.

2. In a flharveste guthe. combination with a driven wheel having an undulating periphcry, of a three-armed lever having two ofits;

arms engaging the undulating periphery of said whee-Lthe third arm of-said levelbeing provided with a sliding extension, a cran-k lever having one of its members connected with-the sliding extension of the three-armed lever,and-a pitman for operating the cutter-;

bar, connected with the other member of the crank-lever, substantially as described.

'3. In a harvester, the "combination with a driven wheel having an undulating periphfeiy','of"athree-armed lever having two of its mse a ins h u d latin p r phery of said wheel, the third arm-of said lever being provided with a socket in its end, a lug having a-lpin fittingin the socket of the arm of said'lever, a crank-lever having one member connected with said lug, and a pitman for operating the cutter-bar, connected with the other member of the crank-"lever, substantially asrdescribed';

- Signed at Copenhagen, in the Kingdom of Denmark, the llthzday of October,"1899. "JO HAN- AUGUST DAUGA-A-BD. Witnesses:

J-U-LEs BLOM, PrHOFMA-N BAUG. 

